robert.swiecki@gmail.com | a0d8714 | 2015-02-14 13:11:18 +0000 | [diff] [blame^] | 1 | /* |
| 2 | |
| 3 | honggfuzz - architecture dependent code (LINUX/UNWIND) |
| 4 | ----------------------------------------- |
| 5 | |
| 6 | Author: Robert Swiecki <swiecki@google.com> |
| 7 | |
| 8 | Copyright 2010-2015 by Google Inc. All Rights Reserved. |
| 9 | |
| 10 | Licensed under the Apache License, Version 2.0 (the "License"); |
| 11 | you may not use this file except in compliance with the License. |
| 12 | You may obtain a copy of the License at |
| 13 | |
| 14 | http://www.apache.org/licenses/LICENSE-2.0 |
| 15 | |
| 16 | Unless required by applicable law or agreed to in writing, software |
| 17 | distributed under the License is distributed on an "AS IS" BASIS, |
| 18 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 19 | See the License for the specific language governing permissions and |
| 20 | limitations under the License. |
| 21 | |
| 22 | */ |
| 23 | |
| 24 | #include "common.h" |
| 25 | #include "linux/unwind.h" |
| 26 | |
| 27 | #include <libunwind-ptrace.h> |
| 28 | |
| 29 | #include "log.h" |
| 30 | |
| 31 | size_t arch_unwindStack(pid_t pid, funcs_t * funcs) |
| 32 | { |
| 33 | unw_addr_space_t as = unw_create_addr_space(&_UPT_accessors, __BYTE_ORDER); |
| 34 | if (!as) { |
| 35 | LOGMSG(l_ERROR, "unw_create_addr_space() failed"); |
| 36 | return 0U; |
| 37 | } |
| 38 | |
| 39 | void *ui = _UPT_create(pid); |
| 40 | if (ui == NULL) { |
| 41 | LOGMSG(l_ERROR, "_UPT_create(%d) failed", pid); |
| 42 | return 0U; |
| 43 | } |
| 44 | |
| 45 | unw_cursor_t c; |
| 46 | if (unw_init_remote(&c, as, ui) != 0) { |
| 47 | LOGMSG(l_ERROR, "unw_init_remote() failed"); |
| 48 | return 0U; |
| 49 | } |
| 50 | |
| 51 | size_t ret = 0; |
| 52 | for (ret = 0; unw_step(&c) > 0; ret++) { |
| 53 | unw_word_t ip; |
| 54 | unw_get_reg(&c, UNW_REG_IP, &ip); |
| 55 | funcs[ret].pc = (void *)ip; |
| 56 | } |
| 57 | |
| 58 | unw_destroy_addr_space(as); |
| 59 | _UPT_destroy(ui); |
| 60 | |
| 61 | return ret; |
| 62 | } |